// 引入Count组件
// import CountUI from "../../components/Count"
import {createIncrementAction, createDecrementAction, createIncrementAsyncAction} from "../../redux/actions/count"

// 引入connect用于连接UI组件与redux
import {connect} from "react-redux"

import React, { Component } from 'react'

class CountUI extends Component {

  // 加法
  increment = () => {
    const {value} = this.selectNumber
    this.props.jia(value * 1)
  }

  // 减法
  decrement = () => {
    const {value} = this.selectNumber
    this.props.jian(value * 1)
  }

  // 奇数再加
  incrementIfOdd = () => {
    const {value} = this.selectNumber
    if(this.props.count % 2 !== 0) {
      this.props.jia(value * 1)
    }
  }

  // 异步加
  incrementAsync = () => {
    const {value} = this.selectNumber
    this.props.jiaAsync(value * 1, 500)
  }

  render() {
    console.log("UI组件接收到的props是", this.props)
    return (
      <div>
        <h2>我是Count组件，下方组件总人数为：{this.props.renshu}</h2>
        <h4>当前求和为：{this.props.count}</h4>
        <select ref={c => this.selectNumber = c}>
          <option value="1">1</option>
          <option value="2">2</option>
          <option value="3">3</option>
        </select>&nbsp;
        <button onClick={this.increment}>+</button>&nbsp;
        <button onClick={this.decrement}>-</button>&nbsp;
        <button onClick={this.incrementIfOdd}>当前求和为奇数再加</button>&nbsp;
        <button onClick={this.incrementAsync}>异步加</button>&nbsp;
      </div>
    )
  }
}


/* // 映射状态
const mapStateToProps = state => ({count: state})

// 映射操作状态的方法
const mapDispatchToProps = dispatch => (
  {
    jia: number => dispatch(createIncrementAction(number)),
    jian: number => dispatch(createDecrementAction(number)),
    jiaAsync: (number, time) => dispatch(createIncrementAsyncAction(number, time))
  }
)

// 使用connect()()创建并暴露一个Count的容器组件
export default connect(mapStateToProps, mapDispatchToProps)(CountUI) */


// 使用connect()()创建并暴露一个Count的容器组件
export default connect(
  state => ({
    count: state.he,
    renshu: state.rens.length
  }),
  {
    jia: createIncrementAction,
    jian: createDecrementAction,
    jiaAsync: createIncrementAsyncAction
  }
)(CountUI)
